Motherboard schematic in PDF for the Lenovo B480 and B590 notebooks, produced by Wistron under project LA48 / LA480 with board numbers 11264 and 11273, revision SC.

Schematic for the Lenovo B580 laptop, with board identifiers LA48, LA480 and MB 11273, labelled RSD and 0106, in a 5.14 MB PDF.

Schematic for the Lenovo B590 laptop, with the name referencing a Wistron design and the code LA480, saved as a PDF of about 6.9 MB.

Schematic for the Lenovo B580 notebook, carrying the LA48 / LA480 project code and the reference 11273, which Wistron uses for its board numbers.

Lenovo B490 laptop schematic, 1.95 MB PDF. The name contains a long string beginning with LA that appears to be a Compal-style board code fused with other digits, but it…

Wistron-built schematic for the Lenovo B480 and B590 laptops, with the name listing project codes LA48 and LA480 and motherboard numbers 11264 and 11273 at revision SC.

Schematic diagram in PDF form, packed in RAR, covering the Lenovo B590 and B490 laptops on the LA480 / LB49A motherboard numbered 12208-1, a pattern used by Wistron.

Lenovo B490 laptop schematic in PDF, about 1.95 MB; the file name includes a long numeric string beginning with la that may encode a board or part reference but cannot…